/**
 * Copyright 2009 Henning Teek, Ingo Renner
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.googlecode.bricket.web.common;

import org.apache.wicket.Component;
import org.apache.wicket.behavior.AbstractBehavior;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.html.form.FormComponent;

/**
 * @author Ingo Renner
 * @author Henning Teek
 */
public class ValidationStyleBehavior extends AbstractBehavior {
	@Override
	public void onComponentTag(final Component component, final ComponentTag tag) {
	   	// Cast prüfen, das es bei Innerclasses und Labels sonst fehl schlägt.
    	if (FormComponent.class.isAssignableFrom(component.getClass())) {
    		FormComponent comp = (FormComponent) component;
    		if (comp.isValid() && comp.getConvertedInput() != null) {
    			tag.getAttributes().put("class", "valid");
    		} else if (!comp.isValid()) {
    			tag.getAttributes().put("class", "invalid");
    		}
    	}
	}
}
